As far as power consumption goes, I read that the LED's use about 30% less than a comparable sized LCD TV,
That's why the LCD's are going so cheaply.
The smart money is on the LED's.

They are phasing out incandescent light bulbs also. I believe you can only buy what mfgs and retailers already have in stock.

Soon we will all be forced to buy fluorescent or LED bulbs.
More expensive in the short term.

Bottom line is to check the energy consumption labels.